The patent holder in the karaoke equipment is Roberto del Rosario, who's with the Philippines. He formulated the karaoke's sing-together process in 1975 and is also regarded as the only real holder of the patent for your karaoke procedure on the planet.[20] Later on developments[edit] When you are getting a https://xn--939au0g6rj1ue34n9rrf5c.online/